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Boston Acoustics SPG-555 Bandpass design...did I do it right??
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<blockquote data-quote="vernors" data-source="post: 8657692" data-attributes="member: 675704"><p>Wow, what a difference and completely see what you mean about WinISD. Great to know about the affect of cabin gain, the charts clearly show that the higher tune frequency is the way to go. Was 47 hz the best all around choice for this set up....and does that graph show that this setup would kick out 20hz at +6 DB?</p><p></p><p>I've got a bit of a problem to figure out with the port and it helps if it's smaller rather than larger. I'd prefer to cut through the backseat wall within the armrest, but if that isn't possible I have to go up through the rear deck. Armrest option is problematic because the sealed enclosure portion of the bandpass exceeds half the box...and the armrest is pretty much square in the middle. Possible to angle the inside of the enclosure, but will see. Trying to minimize the size of the box due to limited trunk space. </p><p></p><p>Any way to check how much power I can push without issues? </p><p></p><p>Also can I continue to use WinISD with the assumption that a 47 frequency tune is the base line? I can model different size ports to check options. </p><p></p><p>Thanks for checking on the set up, major difference and great advice.</p></blockquote><p></p>
[QUOTE="vernors, post: 8657692, member: 675704"] Wow, what a difference and completely see what you mean about WinISD. Great to know about the affect of cabin gain, the charts clearly show that the higher tune frequency is the way to go. Was 47 hz the best all around choice for this set up....and does that graph show that this setup would kick out 20hz at +6 DB? I've got a bit of a problem to figure out with the port and it helps if it's smaller rather than larger. I'd prefer to cut through the backseat wall within the armrest, but if that isn't possible I have to go up through the rear deck. Armrest option is problematic because the sealed enclosure portion of the bandpass exceeds half the box...and the armrest is pretty much square in the middle. Possible to angle the inside of the enclosure, but will see. Trying to minimize the size of the box due to limited trunk space. Any way to check how much power I can push without issues? Also can I continue to use WinISD with the assumption that a 47 frequency tune is the base line? I can model different size ports to check options. Thanks for checking on the set up, major difference and great advice. [/QUOTE]
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Boston Acoustics SPG-555 Bandpass design...did I do it right??
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